Gage.



. H. HESS.

GAGE.

7 APPLICATION FILED OCT-19, 1912.

Patented Feb. 1, 1916. I I

, .2 SHEETS-SHEET l- H. HESS.

I I GAGE.

APPLICATION FILED OCT- 19; l9l2.

2 SHEETS-SHEEIZ.

1,170,255,; PatntedFehL'lQlG.

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THE COLUMBIA PLAIflOGRAPl-l C0,, WASHINGTON, D. c

HENRY HESS, OF PHILADELPHIA, PENNSYLVANIA.

GAGE.

7 Specification of Letters Patent.

Patented Feb. 1, 1916.

Application filed October 19, 1912. Serial No. 726,637.

To all whom it may concern Be it known that I, HENRY Hnss, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Gages, of which the following is a specification, reference being had therein to the accompanying drawing.-

My invention relates to gages and more particularly to what may be termed fixed dimensiongages, wherein in practical use there is no adjustment, the gaging surfaces being permanently set. for a fixed size or dimension to which the object must accord. Certain features herein, however, are adaptable to other species of gages.

It is an object hereof to enable the advantageous employment in various types of gages such as end gages, length gages, etc., of preformed contact pieces, such for example as preformed hardened steel spheres which I prefer on account of the superior gage contacts and other advantages which pertain thereto. I

Another object hereof is to provide superior modes of attaching such preformed contact pieces to supports or handles.

Another object hereof is to provide superior modes of standardizing or correcting the size or dimension of a fixed dimension gage embodying a plurality of preformed contact pieces.

Other objects and advantages hereof will appear in the hereinafter following description or will be apparent to those skilled in the art. 7

I will first describe oneor more embodiments of my invention, and will thereafter point out the novel features in the claims.

In the accompanying drawings forming a part hereof, Figure. 1 is a side view partly in section of an end or length gage embodying the present invention. Fig. 2 is a top view of the gage seen in Fig. 1.- Fig. 3 represents'by itself a preformed contact piece such as may be employed in the present invention. Fig. 4 represents a spherical contact piece which has been machined away to permit connection to support or handle in accordance with the present invention.

' Fig. 5 is an end view'of the gagev of Figs.

1 and 2. Fig. 6. is a perspective view showing the formation of the end of the support or handle before attachment to the contact piece or sphere, the position of the sphere 7 being shown in dotted lines. Fig. 7 represents in side view a modified form of gage embodying features of the present invention,

the same shown partly in section to better disclose the interior construction. Fig. 8

Similar letters of reference designatecorresponding parts in the several figures of the drawings. I

Referring first to the modification of Figs.

1' to 6, the gage therein shown comprises a preformed contact piece A and a support ing piece or handle B. For the reasons already stated, the contact piece is substantlally of spherical form and may be conis a top view of the end of the gage of Fig. 7. Fig. 9 represents partly in section the Fig. 11 represtructed of a preformed hardened steel sphere A, Fig. 3. There will be at least one of these preformed contacts, and in the preferred embodiment shown there is one at each end of the gage, so that the latter may be employed as an end or length gage with such contact pieces affording all the gaging contacts. According to this invention the connection between the contact piece A. and the support B is made by forming the latter to grip the former, that is to sayby bending portions of the support B around so as tow grip the contact piece or sphere A. This I prefer to accomplish by' forming recesses preferably by machining the same at proper points in the surface of'the contact piece.

For example, agroove or a pair of grooves ma may be machined as indicated in Figs. 1, 2,4 and Preferably these grooves will be located on either side of the equator so as not to interrupt the continuity of the spherical surface at the extreme-contacting end of the gage. The support or handle B may be and preferably is tubular, not only for lightness but for other reasons below set forth. The ends of support B will be formed to cooperate with the grooves a, a for gripping the contact piece A. For example there may be a pair or two pairs of projecting strips 1) formed as in Fig. 6. Upon locating the grooved contact piece A withinthe strips 6,

' rolled circumferentially around it a shallow groove. Also it may have, if desired, an annular excrescence D spun from the interior before completion of the gage. If now the gage be found to be of slightly too great length, the spinning of groove C will shorten the instrument and thus permit standardization. An increase in the depth of groove C will decrease the length of the gage. If the gage be shortened too much or be originally constructed too short, the annular portion D may be rolled to flatten it somewhat, thus lengthening the gage. In this way we have complete ability to standardize.

Referring now to the modification of Figs. 7 and 8, the attachment or gripping of the sphere E by the support or handle F is dif ferent. In this case the support F has a single pair of projecting strips f of sub stantial width but of insuflicient length to meet each other, so that when pressed into the sphere recesses e the sphere-at the end of the gage will be maintained intact as before. For standardizing this instrument, I have shown the support F to be composed of separate members relatively adjustable as by screw threads. There may, for example, be three members, member 9 gripped to one sphere, member g to the second sphere, and

vmember G having screw engagement with both member 9 and 9. Obviously standardization is effected by relatively turning one or both. of the members 9, g or the member G. When properly standardized soft solder may be applied to render the adjustment permanent, for example as shown at g or 9 Referring to the modifications of Figs. 9 to 13, this illustrates a mode of connection between contact piece and support or handle which obviates the machining of recesses in the contact piece or sphere. The result is shown in Fig. 9 wherein the sphere H is gripped around its entire circumference by the extreme or end portion 7' of the support or handle J. This construction may be produced in the following manner. Beginning with the sphere H and tubular support J as shown in Fig. 10, the metal of the latter may be swaged to an enlarged diameter, for ex ample by forcing the sphere E into the tube, the latter being if desired supported against improper deformation by suitable dies. Fig.

standardizing the instrument.

It will be seen that by the foregoing described embodiments, l have attained tbeobjects and advantages hereinbefore recited and referred to. Since many features hereof may be employed without other features and may be variously modified in detail and form, I do not wish to be limited to matters of detail or form excepting as set forth in the appended claims.

What I claim and desire to secure by Letters Patent is:

1. In a fixed-dimension gage the combination of a spherical contact piece, and a support therefor, said support having a body part and gripping portions all constituted of a single integral piece of bent metal, and said gripping portions being bent permanently into place around the sphere so as to grip it rigidly by contact outside of its equator.

2. In a fixed-dimension gage the combi' nation of a spherical contact piece, and a support therefor, said support having a body part and a plurality of gripping fingers each constituted of a single piece of bent metal, integral with said body portion and said fingers being bent permanently into place around the sphere so as to grip it rigidly outside of its equator.

3. In a fixed-dimension gage the combi nation of a spherical contact piece having finger receiving grooves, and a support therefor, said support having a body part and a plurality of gripping fingers all con stituted of a single piece of bent metal, integral with said body portion and said fingers being bent permanently into place around the sphere so as to grip it rigidly outside of its equator in said grooves; the parts constructed and arranged to afford contact exposure of the sphere at the end and also at the sides of the gage.

4. In a fixed-dimension gage the combi nation of a spherical contact piece, and a support therefor, said support having a body part and a plurality of extensions, said extensions being bent permanently into place around the sphere so as to grip it rigidly outside of its equator, and the parts so constructed and arranged as to afford contact exposure of the sphere at the end of the gage and also at the sides thereof.

5. In a fixed dimension end or length gage the combination of a contact piece and a tubular support having gripping extensions bent around said contact piece for permanently and immovably holding it, and means for standardizing the length of said gage by deformation of the support.-

6. A fixed dimension end or length gage comprising a tubular portion having suitable contacts at its ends, and means for standardizing the length of the same comprising a spun portion capable of deformation.

7. A fixed dimension end or length gage comprising a tubular portionhaving suitable contacts at its ends, the same standardized as to its length by a groove or depression spun therein.

8. A fixed dimension end or length gage comprising a tubular portion having suit able contacts at its ends, the same capable of standardization as to its length by reason of an outwardly spun excrescence adapted to be depressed for lengthening.

9. A fixed dimension end or length gage comprising a tubular portion having suitable contacts at its ends, the same capable of standardization as to its length by a groove spun therein and by reason of an outwardly spun excrescence adapted to be Copies of this patent may be obtained for five cents each, by addressing the Commissioner. of, Patents,

Washington, D. 0." Y 

